Gauge



Sept. 16, 1952 R. PlsToLEs 2,610, 409

GAUGE Filed Nov. 30, 1948 z- 9.1. 50 L@ @y .a6 86 94- sa 96 ,04,

.INvENT-UR LAMBERT R. PIETULEE -TTDRNEY L. R. PISTOLES sept. 1s, 1952 GAUGE 2 SHEETS-SHEET 2 Filed Nov. 30. 1948 INVENTDR LAMBERT R. PIsTnLBs TT URNEY Patented Sept. 16, 1952 g. 1 1 1 -uNlTlezp STATES PATENT *l-,Hw

GAUGE.

Lambert n. Pistoles, Wilmington, nel.

Application November 3 `-This invention relates to gages, and more particularly togages operating througha dial indicator. In copendingr applications Serial No. 39,138, ledv July' 16, 1948, andSerial No. 30,069, led May- 29, 1948, there are shown flush pin gages of anovel form principally'adapted to measuring lengths of turned bodies, depth, or generally distances between parallel surfaces. The gages therein shown'are primarily adapted for flush pin manipulation, although' application of a dial indicator is illustrated and described in the former.

The present invention is directed tothe adaptation of a dial indicator to the gages of the type above referred to, the adaptation being effected in @a rugged manner, readily adjustable and such vthat accurate indication of length may be quickly'observed.

Accordingly, an object of the present invenf tion is to provide a dial indicator in combination with a pin gage in a manner to provide assured accurate indications.

Another object vof the invention is the adaptation of a dial indicator tov a pin gage in which movement of'thepin gage may be restrictedr to a desired rangefwithin the dial indicator range.

Still another obj ect of the invention is the provision ofv a range of, length adjustment f or a p in gage of Ythe type' described, wherein the gage when adjusted may actuate a dial indicator for ease of observation. y The abovef and other novel features of the in-. vention will appear more fully hereinafter from the following detailed description when taken in conjunction with the accompanying drawings. It is expressly understood that the drawings are employed for purposes of illustration only and are not designed as a definition of the limits of the invention, reference being had for this purpose to the appended claims. I Y

In thedrawings, wherein like reference characters indicate like partsz? Y Figure 1 is a top plan view of a gage adapted for axial measurement of turned articles;

`Figure 2 is a side elevationof the gageof Fig-1 ur'el; W,.,1

Figure 3. is an end elevation ofthe gage of Figure 1, with parts in section, taken on the line s-3ofFigure2;' l

Figure 4 is a longitudinal enlarged section taken substantially-on the line 4-4 of Figure 1; Figure V5` is a top plan viewof a modified fornr I of the invention applied to a depth gage;

Figure 6 is a side elevationof the gageA of Fig--4 ure; Y Y

ma, serial in.A '62,737

Figure? is an enlarged section taken substantiallyon the line 'I4-1 of Figure 6'; andH 1 i Figure 8 is a sectiontaken on thebroken' line 8-8ofFigure5. In Figures 1 to 4, inclusive, there is shown'a gage comprising 'in general a block I0, having a shallow V face for engaging turned surfacesya gage pin I2, and a dial indicator I4. Theblock I0 is provided with the dihedral face comprising the inclined faces I6 and I8, intersecting in'a line 2|), and end faces 22 and 24, accurately formed at right angles to said faces I6 and'IS and line 20. The block is provided with a bore 26 to slidingly receive' the gage pinT I2, the latter preferably having a disk 28 on its end having plane faces 36 and 32, at'right angles -to the Lpin. ItV will be observed that the block. 'is thus adapted to engage aturned surface such-as'A of a work piece, to thereby align' the pin I2 in par allelism with the work axis,-and the end face 24 engages a flange Ffwhile the pin disk 28 en'' gages 'a shoulder S, for gaging the'dis'tancefbe-f tween the fiangeFand shoulder S. The upper side of the block I0 is provided with an yannular recess v34, and'raised circular deck 36, the latter being adapted to 'substitutefor and. be received in place of the Vcircular back platefof,

a stock dial indicator of the type shown at' 5I4 The dial" indicator has a circular body or casing portion 38 having an annular shoulder -40` adapted to receive the raised deck 36, andthe indicator is'v adapted 'to be held -in place'bythrough screws 42 vand44, the heads of which are seated in the dialplate 46, and threade'din the raised deck 36. i

The dial indicatorf'for 'protectionis sur*- roundedbya'n annularring 48 having a recta'n gular flange 49 secured to the block I0 as by screws 50, such rectangular flange" extending to the left and formingl with .an integral web v52 a T-'sectioned extension arm for rigidly 4supporting a pin guide bracket 54.` The web 52merge's with the ringv 48'to form a' rigid cantilever structure. As shown in'application Serial No.l 39,138, 'the rectangular flange may be 4secured to the'block I0 so'as tobear laterally against theside flange orfshoulder, 56,l the surface of which is'parallel with the gage pin axis, and adapted to cooperate with the "extension arm so as to provide perfect alignment of the pin aperture in bracket 54 with the pinbore 26. A A The dial indicatorv Vshown includes the usual indicator rod 58, slidably positioned `in apertured bosses 60 and 62. The rod has been reduced in length by removing a portion of the .righthand 54 end thereof 4as seen in Figure 4.- The rod or pin is provided with rack teeth operating on a pinion 64, in turn actuating a dial .hand 66 through the of a ball head actuating pin 84. The pin has a re.v

duced shank portion 86, and may be secured in the rod by any suitable means such asf'adri'ven r screw thread t. The pin v,extends:through an aperture 88 in the deck 3B to intersect the pin bore 26, and the ball head 90 is so locatedfas to lie on the axis of thebore.

t-.Tfheminrisgprovided fwithla .i-concentriczbore-f92 from its end, :which is ithreade'd L to .receive aadinstable threaded v.members v:in sthe rform po'f ay socket head set .screw 94, and lockingascrewc. Thepinxis;alsosslottedifrom the end as .by-.milling to mermit .theaball head2andshankgportiom 8.6 to `extendiintoithegrpinsor-that the ball head may bear against '.fthe .transverse-..end surface .of :the socketzhead setscrewe94. The slotf98 -is1oifgreater widthrthan ...the shank diameteriof 'fthe .ball :head pingandris adaptedtoeengage akey pin I 00. havlng uagpress;` iitiin the. gdgeabody ;I.0,-and ofsazdiarneterto closely; fitfthe slot88 ,'fandikeept the ,gage mdlfi'rcml turning; :thus :maintaining :clearance around the; shank i486..

'ri'llhe l'ockingiscrew :1.9.6 ihas a '.dualunction, vin thatthehead 'I-021thereof is :adapted :to: limit trayelmfi the gagegpin -rby .engaging fthe-shoulder I84..:orzaf;transverse-fbare Iafsecured infarsuitable complementary channel in ithe back face n2.4 A.of the gageiblock' |20.. .Therbar rIzIll:and.-the.screw spectively, in which ."there -is "positioned ,fa coil biasing-spring .1.12. Thebara I08.is secured totithe ahy aa :pair :of :spaced `sscrews 'such i as fI. |14, the: details uof :which '.areemore clearly :shown .in lligtlresV `8 ean'd :5., 'wvliichgare fentirely -fsiinilar` in ii'iisrrespect.

:Suitable :means 4:are :provided .fior T locking :the beze1:;in=.position,zas:;by the set-screw [IE6 threadediinxthe #annular guard ring 548;:fandf'a suitable indiciaiabell: I Itbearingrdatarespectingthe; gage .setting mayzbeasecuredto'ithe rlnggthus: covering suchgiset -screwyto V"prevent :tampering therewith; Additionally, the bores in whichzthe screws; I=I4 arerpositicnedrmay ',bemlledi-with f beeswax 5.11 it laeirigr-apparentY from thestructnre .described that oncetthefgageaand'gage pinfhave beenfsetgaccess to'-thmadjustmentsLthereoffareeectuallyblocked or fsealed' bythe beeswaxfanrthidden hezel zscrew. Y vvI1-'1itliei-arrangement'shownfinfFigureszSeB,1.con-

.siderableiesimilarity to Figures '1.1 fato 14 fiislpresent, the?ga1ge,fhowever; beingrapplied'fto abloekfadaptedf-for usedn'Ilepth-fgaging andfsimilar orrelate'd operations.` In'fthis form, "thereis provided a `ifigid'frame I-Iihaving `a true *plane 1 gagingi face tf1; rigid @hanna larms. "IV Ils and centrardiai h-idlcatorf and -gage' pin-"sup porting' blockefsection "I2-6. PThe-gage'. frame vI I5A mayv belfvariously fitted with brackets |213 vto vaccommodate *various ygra'ging problems, and thepin I I3 may`have=aba1l `iii-peor vthe equivalent thereof,-as illustrated in the illslr-segment I-'28 having 'a' spherical surfacef yI 30. l".JI'he-"block#section12W-has circular deck -I38 fdaptedf'to'-receive'the-fcircular body or casing `rmrticn'd of ltl'ie dial indicator, `the `indicator being held in position as by screws |42. .Protection is afforded the dial indicator by the anged guard ring |48 secured to the block as by screws I 50. The indicator rod |58 as previously, is biased by a tension spring I'IG, andis provided with a movement limiting shoulder in the form of a screw head I'I8.

As described in Figures 1 to 4, the rod is provided Wthaaballlheadginu, 'the .blllhead end 90 'of' which' engages a socket head' setf'screw 94 and locking screw 96. The gage pin is proi vided with a milled slot |98, closed at the end, .and which cooperates with a key screw 200. The

.remaining parts are similar to those described 4iintathezformiashown in Figures l to 4, andA function in a.1ike.manner.

"In practice, it will'be appreciated that a limited .movement of the dial indicator bar 58 will effect rotation of the indicator hand 66, and that it is desirableato limit motationof .the handv toless than. 360..or%.less.than ;180`..abov,e or below :the zero setting to avoid possible error inreading the.- gage. vThe.rangesomovement of. the. hand is .accurately .gOVerned by .the thickness .ofY .the head I.Il2.ofv the lockascrew 86., .in itstraveLbetween .the shoulder ..I.l141.and .bar |86. It will` of course -be apparent that. by varying .the .head thickness, suchtra-vel. may :be yvariedrtdmatch .the travel with: the sensitivitycfthe. gage selected..

.A gage ofthe type described will in..practice,be supplied with pins of .varying lengths.varyng,1.f.or example, in half inches, and lock screws vhaving diiering;headthicknesses willhe provided. .-In adjusting ..thegage for use, ,theasocket head :set screw &4 .will Y be ,properly 4.positioned .in .the Apin I2 .to providea-...zero indicationwhen .the gage pin andblockare contacted .with correctlyspaced work surfaces to be gaged. The lock-screw having head thickness ..to .match the .desired dial yhand travel is selected :and ,positionedinplace behindthe.` setscrew, .thebar .lpositioned and secured in place by the screws.I I4. 'Should-the. lock.screwspressureonset.screw `:94 -causea .slight shift, ,the gage .daLmay .be .rotated 1 to zero .by rotatingthe. bezel, .and thereafter lockedA by. screw I i6. The gage. isi thus.. set ,andready .for use.

...In .the form shown inliguresl to .4,.end plates t 23..and .2l/arev shown fastenedtothe gage .block limits of the invention.

bysuitablescrewsi arranged in slots. Theplates each .havepar-allel `faces., one of .which lies against the end faces 22 and A.24, respectively. The.v plate 25.1nay bemovedcto provide ,agage face-opposedlto'.theiace' 24, or either platemay. provide .a parallel -iace suitably stepped tov avoid afillet, vall as .describedlin application Serial No. 39.138.. The p1ate.23maybe vsecured .by screws threaded into .theendsof the bores :receiving .the screws II 4 in the'blockIIl.

It will thus.be.seen thata pin gage .operable upon a dial'in'dicator of .rugged constructionY has beenprovided.. While several modications .of the invention have been ,shown .and described, it is to be understood that the'inventionis .not limited thereto. As many variationsin .useand operation `and changesin .construction and arrangement may be made without departing from,

to those skilled inthe: art, reference willlbe'had.

to lthe appended claims V for 'a definition .of the What is claimed is; y. l '1.7111 'agage,` a 'gage `block "having a gaging surfaceand `Work-engaging surfaces Vat -right angles jthereto, ja" bore therein .normal-'to' ^said gaging surface,=a slida-ble gagepin in said y'here having a gaging end surface, means for mountL-f onsaid block laterally with"l ing-'a dial indicator means for limiting the axial respect to said pin, movementl of saidpin, the dial indicator for transmitting movementxof the'pin to the dial operating mechanism of said indicator said means comprising ballcontacting means located on the'oenter line4 of said pin.

2. In a gage, a gage block having a gaging surface and Work-engaging surfaces at right angles thereto, a bore therein normal to said gaging surface, a slidable gage pin in said bore having a gaging end surface, means for mount-v ing a dial indicator on said block laterally with respect to said pin, means for dial indicator for transmitting movement of the pin to the dial voperating mechanism of said indicator said means comprising ball contacting means located on the center line of said-pin,` and means coaxially arranged With respect to the pin for resiliently biasing the pin in one direction.

3.Y In a gage, a gage block surface, a bore therein normal to said surface,

a slidable gage pin in said bore having a gaging' mountingv ajdial indicator end surface, means for and means supported by.

limitingithe axial movement of said pin, means supported by the I having a -gaging y.

having a slidable bar on said block, with the bar` i extending parallel with the bar for transmittingv movement of vthe pin the pin, means rigid with and including ball contacting means located on the center line of said pin, means for limiting movement of the pin to a range embracing the dimension to be'gaged and the tolerances thereof and means for axially shifting said last-named means Withjrespect to said pin. '4. In a gage, a gage' block having a gaging surface, a bore therein normal to said surface, a slidable gage pin insaid borehaving a gaging end'surface; means'for mounting a dial indicator having va slidable bar lon said block, with the bar extending parallel with the pin, rneans trans-Y mitting movement ofthe kpin to said bar includ'- inga lball contact on the pin axis, means.- for limiting movement of the pin to a range embracing the dimension to be gaged and the toler-l ances thereof, means for axially shifting saidA last-named means with respect to said pin and means for resiliently biasing the pinvin one direction. 1

5..In a gage, a gage blockhaving a gaging surface, a bore therein normal to Vsaid surface, aslidable gage pinin said bore having a gaging end surface, means for keying said pin againstv block having a gaging pin, means for` transmitting movement of the pin` to the dial'operating mechanism of said indicatorincludinga lball contact on the pinaxis, means for setting said pin relative to said bar and means for resiliently biasing the pin in one direction.

'7. In a gage, a gage block having a gaging surface, abore therein normal to said surface, a slidable gage pin in said bore having a gaging end surface, means for keying said pin against normal to said surface, al

keying said pin against' rotation, means for mounting a dial indicator having a slidable bar on said block, with the bar extending parallel from the pin including aball point contact lying substantially on the pin axis, means for transmitting movementtoksaid bar with the pin, means coaxial-With the pin for biasing'the pin and means 'forlimitingzmovement of the pin to a range embracingthedi-I mension to be gaged and the tolerances thereof..

8. In a gage, a gage block having a gaging surface, a bore therein normal to said surfacer a slidable gage pin in said `bore having a gaging end surface, means for keying said pin against rotation, means for-mounting a dial indicatorl having a slidable bar on said block, with the bar extendingV parallel with the pin, means for transmitting movement to said bar from the pin'including a ball contact coaxial With said pin, means for limiting movement ofthe pin to a range embracing the dimension to be gaged and the tolerances thereof, means for axially shifting said last-named means with'respect to said pin and means for resiliently .biasing the pin in one direction.

9. Ina gage, a gage block having a gaging surface, a bore therein normal to said surface, a slidable gage pin in said bore having a gaging end surface and an axially extending key slot, means for mounting a dial indicator on said block laterally with respect to said pin, means for limiting the axial movement of said pin, and means for connecting the pin to the dial operating mechanism of said indicator, said connecting means comprising an axially adjustable screw coaxially positioned in said key slot in said pin, and an arm terminating in a contact ball extending from the dial' indicaton operating mechanism into said key slot.

l0. In a gage, a gage block havingl'a gaging surface, a bore therein normal to said surface, a slidable gage pin in said bore having a gaging end surface and an axially extending key slot, means for mounting a dial indicator on said block laterallywith respect to *said pin, means g for limiting the axial movement of said pin, means for connecting the pin to the dial operating mechanism of said indicator, and means for resiliently biasing the pin in one direction, saidl connecting means comprising an axially adjustable screw coaxially positioned in said key slot in said pin, and ari-arm' terminating in a contact ball extending from the dial indicator operating mechanism into said key slot.

11. In a gage, a gage block having a gaging surface, a bore thereinl normal to said surface, a slidable gage pin in said bore having a gaging end surface and an axially extending key slot, means for mounting a dial indicator having a slidable bar on said block,.with the bar extending parallel with the pin, vmeans connecting said bar with the pin, and means for limiting movement of the pin to a range embracing the dimension to be gaged and the tolerances thereof, said connectingv means comprising an axially adjustable screw coaxially. positioned in said key slot in said pin, and an arm terminating in a contact ball extendingV from the dial indicator operating mechanism into said key slot. y

12. In a gage, a gage block having a-gaging surface, a bore therein normal to said surface, a slidable gage pin in said bore having a gaging end surface and an axially extending key slot, means for mounting a dial indicator having a slidable bar on said block, With the bar extending parallel with the pin, means connecting said bar with the pin, means for limiting movement of 7 the 'gnnlto .a .range mbracing :the to be fgagedmnd :the :tolerances .thereof and means 'for :resiliently biasing :the pin I in :one direction,- said connecting means comprising an axiallyadjustable. :screw .coaxially positioned in :said .key slo't infsad pin,.and ansarm :terminating in a contactV ball extending .from the .dial Lindicator operating ,mechanismintosaid key'slot.

134,111 a iga'ge, .a V,gage block having .a gaging sinface, ya `bore therein normal to saidsuraCe, asli'dable gage pin Ain zfsaid 'bore having za gaging endsurface and an :axially extending key slot, means for keying .said pin .against rotation, means `ffor mounting :a dial indicator on. .said block .laterally .with :respect .to .said pin, Ameans forlimitingtheaxial movement of said,pin,:and meanszforzconnecting the pin to the.- dial operatingrmechanism of said indicator, said connecting means .comprising `an axially adjustable .screw l coaxially positioned in said .key V.slot 'in said pin,

and an arm terminating in a contact-ballv extending .from :the `:dialtindicator.operating mechanism into said .key slot.

14. In a. gage, a gage block having'a Ygaging surface, a bore therein normal to said surface, a-slidable gage pin in said'bore having a gaging end l.surface .andfan axially extending keyslot, means `for keying said pin against rotation, means for mounting a dial 'indicator on vsaid block Vlate'rallywith `respect to said pin, means for limiting the Y'axial movement of said pin, means for connecting the pin rto the dial operatingmechanifsmof said indicator, and means for resiliently biasing 'the pin in one direction, said connecting means comprising an axially adjustable screwcoaxially positioned in said key slot in said Spin, and an arm terminating in a contact ball extendingffrom'the dial indicator operatngimechanism intosaid key slot.

15, In a gage, a gage block having a gaging surface, Va bore therein'normal to -said surface, a slidable gage pinin'said bore having a gaging end surface Aand an axially lextending key slot, means .for keying said pin against rotation, means :for 'mounting a vdial indicator having a slidable bar on "said block, with the bar extending parallel with the pin, means connecting said bar'with 'the pin, and means for limiting movement of the vpin to va range embracing'the dimension to be gaged and the -tolerances thereof, said connecting means comprising an axially'adjustabl'e :screw Lcoaxially Apositioned .in said key slot in said pin, and an arm terminating. in acontact .ball extending Vfromtlie dial indicator operatingmechanism into said key slot.

.16. VIn a gage,.a gage block having a-'gaging surface, a bore .therein normal tosaid surface, a slidable gage pin in'said bore having `a gaging end-.surface andan axially extending key slot, means for Akeying said pin against rotation, means for mounting'a dial indicatorhaving a slidable bar on said block, with the barextending parallelwith the pin,:means connecting said.- bar withtthe pin,.means.for limiting movement ofthe pin to .a;rangeembracing the dimensionto be gaged, and the .tolerances thereof, and means for resiliently biasing the pin in one direction, v.said connecting means comprising an axially adjustable-'screw `coaxially positioned in said key slot vinssaidjp'in,:andranfnrrn tennlnating inra :contact ball extending from .the :dial indicator .operating mechanism into ;said keylslot.

,17..3Ina gage, .a -gage .block having a easing surface at1one end, a bore therein normal .to Isaid surface, :a .slidable gage pinin :said .here having a gaging :end surface, .a .dial .indicator ,mounted on one side of .saidrblockfmeans for transmitting movement nf .said `pin to said indicator 4including contact means `lying ion :the piniaxis, Aand 'ashallow dihedral .constituting .the opposite side vof said block for contacting "a'turned-surfacelalung spaced line contacts -with .the :axis Aof said gage pin parallel -With the axis of said'turnedrsm'face 18. Ina gage, a gage block adapted torengage a curved-surface of generation along spaced elemental `lines of contact, a bore :in said block having its axisparallel to -the axis o'f.said=.ele. mental "lines, a gage 'pin slidable in said .bore, .ra dial indicator having 'an Vactuating rod mounted on said block'with "its i'rod kextending `parallel Withfsaid pin, `rneans `forming an iaxial adjustable abutment-on sai'dpin,a"ba1l end'pin'xxed to Vsaid lrod with 'the ball endlbearing against said abutment, Yand meansv biasing said .gage pin abutment against said vball end.

1'9. Ina gage, a gage blockfadapted to engage a curved surface of generation along `spaced elemental lines -of contact, a bore in 'said -block having its axis yparallel to the Yaxis of said elemental lines, a gage pin slidable in said bore, a dial'indicator'having an actuating rod mounted on said block with its ro'd extending parallel with said pin, means forming an axial 'adjustable abutment on said pin, a ball end pin vxed to said rod with the ball endbeai'ing against said abutment, means biasing said gage 'pin abutment againstsaid ball end, and means for limiting the travel of said gage pin to 'a range slightly less thana turn of the indicator of said dial indicator.

20. In a gage, a gage block adapte'dto engage a curved surface of generationalong spaced elemental lines of contact, a bore in vsaid block having itsaxis parallel to the axis 4of said elemental lines, a gage pin slidable in vsaid bore, a dial indicator having an actuating rod mounted onsaid block with its 'rod extending parallel with said pin, means forming an axial adjustable abutment on said pin axially vlocated in a threaded bore in said gage pin, 'a slot inthe gagepin leading to said abutment, a ball endv pin fixed to said rod and extending through said slot with the ball end bearing against said abutment, means biasing said gage pin abutment `against said ball end, and means vfor limiting the travel ofsaid gage'pin'to a rangeslig'htly less `than va turn of the indicator of said dial indicator.

'LAMBERT R. PISTOLES.

"REFERENCES CITED The vfollowing references are of record inthe file of ,this ',Ipatent:

UNITED STATES PATENTS 

